Quasar RAT is possibly one of the most dangerous malware types to be affected by, as it allows the attackers to perform a variety of actions remotely. Technically, it simply grants hackers a takeover of the machine, all while being almost invisible to users or organizations.
Is Quasar a rat?
Software programs of this type are known as remote access tools (RATs). There both are legitimate and illegal RATs. Quasar is a legitimate tool, however, cyber criminals often use these tools for malicious purposes. I.e., to steal personal information that could be used to generate revenue.
What is Quasar and is it legal?
What is Quasar? The Quasar tool allows users to remotely control other computers over a network. Software programs of this type are known as remote access tools (RATs). There both are legitimate and illegal RATs. Quasar is a legitimate tool, however, cyber criminals often use these tools for malicious purposes.
Is Quasar remote access tool legit?
Remote access tools can be either legitimate or malicious, depending on their usage. Quasar was licensed under the MIT License, which means that it can be used for personal and commercial use, as well as code modification. Employers can use the RAT for day-to-day administrative tasks in a workplace, and even help to spy on employees if so desired.
What is Quasar malware and how does it work?
However, Quasar is an evolution of an older malware called xRAT, and some of its samples can carry out as many as 16 malicious actions. Over the course of its lifetime, the malware has been updated several times, improving its overall functionality. The last version of the malware, which the original author developed, is v. 1.3.0.0.
How to detect Quasar RAT using ANY.RUN?
How to avoid infection by Quasar?
What is Adwind RAT?
How does Quasar work?
How many actions can Quasar carry?
What is a Quasar email?
When was the last version of RAT released?
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Is Quasar RAT a virus?
Type and source of infection Quasar is a lightweight, publicly available open-source Remote Access Trojan (RAT) which primarily targets Windows OS systems. Backdoor. Quasar is often distributed via malicious attachments in phishing emails, but operators are free to choose their own ways to spread the RAT.
Is Quasar a malware?
Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim's computer remotely.
Is Quasar RAT open-source?
Quasar is a publically available, open-source RAT for Microsoft Windows operating systems (OSs) written in the C# programming language. Quasar is authored by GitHub user MaxXor and publicly hosted as a GitHub repository.
What is a quasar RAT?
Quasar remote administration tool (RAT) is a multi-functional and light-weight malware actively used by APT actors since 2014. Quasar's code is publicly available as an open-source project, which makes the Trojan extremely popular among adversaries due to its broad customization options.
What is orcus rat?
Orcus is a Remote Access Trojan (RAT). Programs of this type are used to remotely access or control computers. Generally, these tools can be used by anyone legitimately, however, in many cases, cyber criminals use them for malicious purposes.
What is Quasar computer?
Trusted by 200,000+ folks. Quasar is an open-source Vue. js-based cross-platform framework that allows you, as a developer, to easily build apps for both desktop and mobile using technologies such as Cordova and Electron and writing your code once.
Who made quasar rat?
Quasar was developed by GitHub user MaxXor to be used for legitimate purposes. However, the RAT has been used by bad actors in cyber-espionage campaigns. Quasar RAT was first released in July 2014 as “xRAT 2.0.” and was later renamed as “Quasar” in August 2015.
What is njRAT virus?
njRAT, also known as Bladabindi, is a remote access tool (RAT) or trojan which allows the holder of the program to control the end-user's computer. It was first found in June 2013 with some variants traced to November 2012.
What is NanoCore malware?
Backdoor. NanoCore is a Trojancapable of gathering information from Windows systems.
How does a RAT virus work?
Remote access trojans (RATs) are malware designed to allow an attacker to remotely control an infected computer. Once the RAT is running on a compromised system, the attacker can send commands to it and receive data back in response.
What is RAT remote administration tool?
A remote administration tool (RAT) is a software program that gives you the ability to control another device remotely. You then have access to the device's system as if you had physical access to the device itself.
Which of the following is a software used for remote connection?
Comparison of Top Remote Access ToolsNameTypeOperating SystemsTeamViewerRemote Administration ToolWindows, Mac OSX, Linux, Android, iOS.VNC ConnectRemote Access ToolWindows, Mac, Linux.Desktop CentralRemote Access ToolWindows, Mac, Linux.Remote Desktop ManagerRemote Access ToolWindows, Mac, Android, iOS.11 more rows
Switjoseph/QuasarRAT: Remote Administration Tool for Windows - GitHub
QuasarRAT. Free, Open-Source Remote Administration Tool for Windows. Quasar is a fast and light-weight remote administration tool coded in C#. Providing high stability and an easy-to-use user interface, Quasar is the perfect remote administration solution for you.
Quasar Open-Source Remote Administration Tool | CISA
Quasar is a publically available, open-source RAT for Microsoft Windows operating systems (OSs) written in the C# programming language. Quasar is authored by GitHub user MaxXor and publicly hosted as a GitHub repository. While the tool can be used for legitimate purposes (e.g., an organization’s helpdesk technician remotely accessing an employee’s laptop), the Cybersecurity and ...
How to detect Quasar RAT using ANY.RUN?
ANY.RUN uses Suricata IDS rule sets, so if malware tries to communicate with C&C servers, it will be detected. To look at what threats were detected, just click on the "Threats" section of the "Network" tab.
How to avoid infection by Quasar?
If the user has admin rights, the malware uses schtasks to create a scheduled task that launches after a user logs on with the highest run level. If admin rights are lacking, then the scheduled task can only go as far as adding a registry value configured in the client builder and added to the current path as the startup program. The best way to avoid infection is for cybersecurity specialists gt to know various user-agent strings that exist in their network, and identify suspicious user-agent strings.
What is Adwind RAT?
Adwind RAT, sometimes also called Unrecom, Sockrat, Frutas, jRat, and JSocket, is a Malware As A Service Remote Access Trojan that attackers can use to collect information from infected machines. It was one of the most popular RATs in the market in 2015. Read More. Agent Tesla.
How does Quasar work?
Like most other RATs, Quasar is distributed in email spam campaigns that carry the malware’s loader. The loader is embedded in a malicious file attachment which usually carries a name designed to trick the user into thinking that they are receiving some sort of a document. Sometimes these files will have a double extension such as docx.exe. Again, this is done to trick the victim into thinking that the attached file is harmless. Of course, once opened, such files start a command prompt rather than Microsoft Office.
How many actions can Quasar carry?
However, Quasar is an evolution of an older malware called xRAT, and some of its samples can carry out as many as 16 malicious actions. Over the course of its lifetime, the malware has been updated several times, improving its overall functionality.
What is a Quasar email?
Like most other RATs, Quasar is distributed in email spam campaigns that carry the malware’s loader. The loader is embedded in a malicious file attachment which usually carries a name designed to trick the user into thinking that they are receiving some sort of a document. Sometimes these files will have a double extension such as docx.exe. Again, this is done to trick the victim into thinking that the attached file is harmless. Of course, once opened, such files start a command prompt rather than Microsoft Office.
When was the last version of RAT released?
The last version of the malware, which the original author developed, is v. 1.3.0.0. It was released in 2016. Since then, several third parties have adapted the RAT and issued their own version, both minor and major, with the last major version being v. 2.0.0.1.
What is Quasar?
The Quasar tool allows users to remotely control other computers over a network. Software programs of this type are known as remote access tools (RATs). There both are legitimate and illegal RATs. Quasar is a legitimate tool, however, cyber criminals often use these tools for malicious purposes.
What can a cyber criminal do with a quasar?
Using Quasar, cyber criminals can access Task Manager and start/end processes, and add programs that run automatically on system startup. Note, the added programs are often malicious. Furthermore, Quasar can be used to download and execute various files.
How did Quasar infiltrate my computer?
Research shows that cyber criminals proliferate Quasar through spam campaigns and various downloaders (or other dubious download channels). Cyber criminals who use spam campaigns send emails that contain attached files and hope that recipients open them. If opened, the malicious attachments install unwanted, malicious software.
What does "Quasar" mean?
I.e., to steal personal information that could be used to generate revenue. If you suspect that Quasar is installed on the operating system (unintentionally), remove it immediately.
What are some examples of RATs?
More examples of RATs are Sakula, DarkComet, and FlawedAmmyy. These tools are often used to perform illegal actions (i.e. steal sensitive information and accounts). People with computers infected by RATs often end up experiencing financial, data loss, infections with other malware, and so on.
Can Quasar be uninstalled?
In summary, Quasar has many functions and, if employed for malicious purposes, can lead to serious issues. Therefore, uninstall this software immediately. Note that this applies only to users who were tricked into installing the program by cyber criminals.
Can Quasar steal your account?
This feature can also steal various important accounts. With access to Registry Editor, cyber criminals who use Quasar can change system and application settings. Note, registry errors can cause a number of problems, including irreversible damage to the operating system.
Subdomain Enumeration for Pentesting Engagement
I'm trying to wrap my head around subdomain enumeration for penetration testing engagements and I understand that the enumeration is done to find potential IP Addresses and services to use as entry points for testing. However, I also understand that for client engagements you will be defining what IP addresses will be within scope.
I am creating a desktop application that communicates with a REST API to talk to the database. The specifications are below, can you guys please guide me on the security aspects of it? I am a beginner so please pardon my naivete
I am creating a desktop application using Python. The GUI is PyQT5. The module performing HTTP requests is the Python Requests module. The API is written in Flask and the database is SQLAlchemy ( it is an ORM).
Encryption with Web App
I'm building an end-to-end encrypted web-app, where users can send files to other users after being authenticated with AWS. I plan to use ECDH + P256 curve for generating private/public keys. The private keys are saved onto the user's computer and the public keys are stored on AWS.
Anyway to get LFI?
I’m looking at a PHP application that someone asked me to pen test. It had some suspicious code that looks like it could be vulnerable. Below is the code:
How to protect your computer from Quasar?
In order to protect your computer from Quasar and other ransomwares, use a reputable anti-spyware, such as Reimage
What is Quasar malware?
. Quasar is a type of malware that allows hackers to perform several actions on the infection users' machines, including installing other malicious software and stealing sensitive information.
What is a Quasar virus?
Quasar virus is a Remote Access Trojan that allows the attackers to control remote computers for information stealing, malware proliferation, spam delivery, and other malicious tasks . Malware can greatly alter the way Windows operates, although this damage can be reversed with the help of repair software
Why do APT groups modify the source code of the Quasar RAT?
Multiple APT groups modify the source code of the Quasar RAT in order to remain undetected on the host machine, as well as the infected network. Therefore, users might not even know that the malware is operating in the background, stealing sensitive information, installing other malicious software, and performing other actions without permission. Due to this, users might not even be aware that they need to remove Quasar virus in the first place.
Why is Quasar removal important?
This is why Quasar removal is crucial for privacy and sensitive information compromise. To remove Quasar, a reputable anti-malware software should be employed. It is also important to disconnect the infected machine from the network and then perform a full system scan.
Is Quasar RAT malware?
Quasar RAT is possibly one of the most dangerous malware types to be affected by, as it allows the attackers to perform a variety of actions remotely. Technically, it simply grants hackers a takeover of the machine, all while being almost invisible to users or organizations.
Is Quasar a malicious program?
Quasar is not malicious by design, but rather by purpose itself – it happens with most Remote Access Tools. The application was first released in July 2014 by a user MaxXor for Windows operating system and was initially known as xRAT. [1] Its code was placed on the Github platform, allowing everybody to use it for free – such tools are called “open-source.” Quasar RAT has multiple legitimate purposes (such as assisting employees with tasks remotely), although malicious actors employ it as malware as well.
Compiling
Open the project in Visual Studio and click build, or use one of the batch files included in the root directory.
Credits
ResourceLib Copyright (c) 2008-2013 Daniel Doubrovkine, Vestris Inc. https://github.com/dblock/resourcelib
Thank you!
I really appreciate all kinds of feedback and contributions. Thanks for using and supporting Quasar!
How to detect Quasar RAT using ANY.RUN?
ANY.RUN uses Suricata IDS rule sets, so if malware tries to communicate with C&C servers, it will be detected. To look at what threats were detected, just click on the "Threats" section of the "Network" tab.
How to avoid infection by Quasar?
If the user has admin rights, the malware uses schtasks to create a scheduled task that launches after a user logs on with the highest run level. If admin rights are lacking, then the scheduled task can only go as far as adding a registry value configured in the client builder and added to the current path as the startup program. The best way to avoid infection is for cybersecurity specialists gt to know various user-agent strings that exist in their network, and identify suspicious user-agent strings.
What is Adwind RAT?
Adwind RAT, sometimes also called Unrecom, Sockrat, Frutas, jRat, and JSocket, is a Malware As A Service Remote Access Trojan that attackers can use to collect information from infected machines. It was one of the most popular RATs in the market in 2015. Read More. Agent Tesla.
How does Quasar work?
Like most other RATs, Quasar is distributed in email spam campaigns that carry the malware’s loader. The loader is embedded in a malicious file attachment which usually carries a name designed to trick the user into thinking that they are receiving some sort of a document. Sometimes these files will have a double extension such as docx.exe. Again, this is done to trick the victim into thinking that the attached file is harmless. Of course, once opened, such files start a command prompt rather than Microsoft Office.
How many actions can Quasar carry?
However, Quasar is an evolution of an older malware called xRAT, and some of its samples can carry out as many as 16 malicious actions. Over the course of its lifetime, the malware has been updated several times, improving its overall functionality.
What is a Quasar email?
Like most other RATs, Quasar is distributed in email spam campaigns that carry the malware’s loader. The loader is embedded in a malicious file attachment which usually carries a name designed to trick the user into thinking that they are receiving some sort of a document. Sometimes these files will have a double extension such as docx.exe. Again, this is done to trick the victim into thinking that the attached file is harmless. Of course, once opened, such files start a command prompt rather than Microsoft Office.
When was the last version of RAT released?
The last version of the malware, which the original author developed, is v. 1.3.0.0. It was released in 2016. Since then, several third parties have adapted the RAT and issued their own version, both minor and major, with the last major version being v. 2.0.0.1.
What Is Quasar Rat?
General Description of Quasar Rat
Quasar Rat Malware Analysis
Quasar Rat Execution Process
How to Avoid Infection by Quasar?
Distribution of Quasar Rat
How to Detect Quasar Rat Using Any.Run?
Conclusion
- Quasar trojan is a powerful open-source malware equipped with a robust persistence mechanism and a complete feature set of malicious capabilities. Being available to anybody with programming knowledge, Quasar became a widely used RAT which was even featured in an attack targeted at the American government. However, unlike other more advanced Trojan...